Hi Francesco Pacelli (International Supplier)!
Welcome to the Microsoft Q&A and thank you for posting your questions here.
Access to Private preview features is mostly given by product team only.
To provide your customer access to private previews for Azure AI services, you can follow these steps:
1.Contact Azure Support: Reach out to Azure Support and request access to private previews for your customer. Explain the customer's needs and the specific AI services they are interested in.
2. Engage with the Product Team: You can try to engage with them through webinars, events, or customer-facing engagements like Hypercare.
3. Microsoft Partner Center: If your organization is a Microsoft partner, you can use the Partner Center to request access to private previews. Ensure that your partner profile is up-to-date and highlights your customer's requirements.
4. Provide Feedback to stay eligible for future preview feature: Once your customer has access, encourage them to provide feedback to Microsoft. This helps improve the services and increases the chances of continued access to future previews.
Reference - how-to-enroll-my-organization-to-get-and-test-priv
Thank you.